A trackball is similar in operation to the joystick. Inputoutput devices and interaction techniques department of. What are graphical input and output devices in a computer. A scanner is an example of input device for graphical as well as text input. Input and output devices an input device enters data or. Similarly it will operate on the field devices which will be discrete or analog output type. Chapter 4 input and output oakton community college. They take electronic data and gives the output as the hard copy.
So dear reader i have provided top expected gk questions from input and output device of computer. A graphics tablet also known as a digitizer, drawing tablet, drawing pad, digital drawing tablet, pen tablet, or digital art board is a computer input device that enables a user to handdraw images, animations and graphics, with a special penlike stylus, similar to the way a person draws images with a pencil and paper. Introduction piece of hardware by which a user enters information into a computer system mouse, trackball, joystick, voice systems, touch screens, others a major goal in designing graphics software libraries is device independence enhances portability of the application. Following are some of the important input devices which are used in a computer keyboard. They are divided into two categories 1 manual input devices devices that need human involvement to input. Output devices monitor features display resolution the resolution of a monitor indicates how densely packed the pixels are. Tell students that today they will be learning about the output devices of a computer. The input can be in the form of graphics, text, sound, audio, video, and image, etc. Pdf this report, such as command history redo, undo, extended to nonlinear sequences and graphical commands, user programming by. Input and output devices of computer computer notes. An input device is used to bring data into the system. Input and output devices can also be written as io devices.
Biometric authentication device touch screen digitizer scanner mice and keyboards the mouse and keyboard are the two most commonly used input devices. Interactive computer graphics lecture 1 graphical output and input. Adding or deleting graphical devices to the menu displayed on the computer monitor required that the fortran source code be modified. A track ball comes in various shapes like a ball, a button and a square. Used to rapidly point to and select a graphic icon or menu item from multiple options. The measure of a device is what the device returns to the user program. Clay reacts to the sculptors fingers yet also provides feedback through the curvature and texture of its surface. Most modern monitors can display 1024 by 768 pixels, the svga standard. The trigger of a device is a physical input on the device with which the user can. Topic 1b introduction to computer systems input and. Since the whole device is not moved, a track ball requires less space than a mouse. Self access learning module ict llliteracy for i seccondary.
New input devices and media can help redress this imbalance by obtaining data from the user conveniently and rapidly, but, relative to output, input has been a neglected. You can use these printers for printing images and texts on the paper. Pointing systems computer users frequently find it easier to point to something on a screen or at an item of text or graphical material they are entering into the computer, a number of devices are available to assist in fulfilling this need. Input output devices are required for users to communicate with the computer.
We are working on adding more output devices examples. Output devices computer output devices receive information from the computer, and carry data that has been processed by the computer to the user. Now a day computer is one of the most important field for every examinations. Input devices imaging and video input devices optical scanner an optical scanner is a hardware input device that allows a user to take an image or text and convert it into a digital file, allowing the computer to read or display the scanned object. The input devices are the hardware that is used to transfer transfers input to the computer. Video input devices are used to entering full motion video recording into a computer. Click the diagram to place the graphical input device. Input devices are those devices through which we can give the data and instructions to the computer. But to evolve from specialized devices to a universal tool required more efficient ways to talk to people. Computer devices computer input and output devices 992019 designed by. Keyboard mouse touchscreen graphic tablet microphone scanner. An input device is any hardware component that allows a user to enter data and instructions into a computer. Intel core2 duo technology cpu advanced nvidia discrete graphics card opengl open graphics library with dedicated video memory buildin palmrest digitizer and pen automatic color calibration.
In simple words, hence plc acts as interface between the input and output devices at the process side of the. The distinction between output devices and input devices becomes even more blurred in the real world. Input devices in computer graphics tutorial and example. Dec, 2019 an input device is the piece of computer hardware equipment used to give input to the computer.
The keyboardlooks very similar to the keyboards of electric typewriters, with some additional keys. Input devices sense physical properties of people, places, or things. In this context, input and output devices with more than 2 degrees of freedom are being developed to support true direct manipulation of objects, as opposed to the indirect control provided by two and threedimensional widgets, and user interfaces appear to require support for many degrees of freedom, 21 higherbandwidth input and output, real. This is a ball which is half inserted and by moving fingers on ball, pointer can be moved.
Output devices in computer graphics tutorial and example. In simple terms, input devices bring information into the computer and output devices bring information out of a computer system. Amazing 20 examples output devices and their functions. The most common printers used are inkjet and laser printers. Io devices are used to interact with the computer system. Yet any treatment of input devices without regard to the corresponding visual feedback is like trying to use a pen without paper. Keyboard is used in the input phase of a computerbased information system. Graphical output devices output devices are needed to generate graphical outputs. Keyboard mouse microphone bar code reader graphics tablet an output device is. Input and output devices of a computer system are the devices that connect you to computer. Computer graphics computer science department university of.
Graphical logical devices graphical input is more varied than input to standard programs which is usually numbers, characters, or bits two older apis gks, phigs defined six types of logical input locator. Output devices provide data in myriad different forms, some of which include audio, visual, and hard copy media. Pdf assinment find, read and cite all the research you need on researchgate. Thanks to advances in computer graphics hardware and algorithms, virtually all new desktop machines available today have sophisticated fullcolor displays with. Ingamule siraji 1 a computer is an electronic device that works under instructions given by the user to accept, process and output information as required.
Output devices monitor printer audio output projector 16. Devices input and output unit 4 input output devices. Cant tell from the code could be keyboard, file, output from another program the code provides logical input a number an int is returned to the program regardless of the physical device. An input device is used to feed data into computer. Just as words spoken or printed will betray a human heart, so will output devices betray the graphics processing inside the computer. Input devices o level computer science 2210 prepared by. Printer is the most important output device, which is used to print data on paper. Hardware of a cad system computer system mainframe computer and graphics terminals powerful inconvenient high cost turnkey cad system dedicated computer systems for cad applications, consisting of a supermini computer and several design work stations. A computer has several input device namely, keyboard, mouse, trackball, joystick, scanner, light pen, bar code reader, ocr, omr, micr etc. Guis were introduced in reaction to the perceived steep learning curve of.
In c input and output are done using, printf, scanf, getchar, and putchar. Printers are the basic and common output devices used in the offices. For example, the letter a to a computer looks like the number 32 in decimal or 0010 0000 in hex what the computer actually uses. A keyboard is an example of input device for text input. Monitors and printers are two of the most commonly. Inputoutput devices and interaction techniques ken hinckley. When an object, such as a finger, presses down on a point on. An input device is a peripheral which accepts data and sends it to the cpu. Input and output devices are required to communicate with the computer. The handout is about the types of computer input and output devices. Though, its interesting that 10 output devices and their functions have been already updated on this article.
Graphics input devices graphics output devices introduction input devices. Without an output device, you cannot know what processing has been done. A good input device should provide timely, accurate and useful data to the main memory of the computer for processing followings are the most useful input devices. One of the primary input devices used with a computer. For example, you can type in data by using a keyboard, or you can input data in picture form by using a scanner.
Pdf input output storages devices in computers researchgate. In general, the more pixels often expressed in dots per inch, the sharper the image. The manner by which physical and logical input devices provide input to an application program can be described in terms of two entities. They will also learn about their functions or what they do. Types of input devices keyboard slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising.
A sheet of paper can be used to both record ideas input and display them output. On the interface layer toolbar, click the graphical input device tool. The joystick is a vertical stick which moves the graphic cursor in a direction the. Input devices are part of the four main hardware components of a computer system. What is the difference between an input and output device. The traditional output device of a personal computer has been the crt cathode ray tube monitor. Just like a television set an older one, anyway the crt monitor contains a large cathode ray tube that uses an electron beam of varying strength to paint a picture onto the color phosphorescent dots on the inside of the screen.
Devices such as mobile phones and personal data assistants allow the user to view and store images that they have created of are going to edit. Output devices output devices are used to receive information from the computer either in softcopy or hard copy. Interactive computer graphics input, interaction and animation. Nov 27, 2018 input output device based mcq mcqs on input and output devices gk objective question answer exam question answer for competitive exam of govt jobs. A resistive touchscreen panel is composed of several layers, the most important of which are two thin, electrically conductive layers separated by a narrow gap. For example, a flight simulator might have multiple input devices such as a joystick, buttons, and switches. The keyboard is used to enter text commands that control the computer. Changes to input and output graphical devices in the original version of modpathplot, the choices for graphical output device were expjtjy specified in the program source code. The development of graphical interfaces was key to creating powerful hardware and software. With handwriting recognition, text is input as a graphical image so the text cannot later be edited as text.
These devices may also be used to move the cursor around a screen to facilitate input to a graphical display. The mouse and keyboard are the two most commonly used input devices. Track ball is an input device that is mostly used in notebook or laptop computer, instead of a mouse. Pdf computer input and output devices ingamule siraji. Smallscreen devices with integrated sensors underscore the indivisibility of input and output. Early computers communicated primarily with coded text. Output device display data from the memory of the computer. The following is a list of the most common input devices which are nowadays found in a computer system. They are divided into two categories 1 manual input devices devices that need human involvement to input data. Color prints and black white prints are available in the printer. Let us first discuss the exact definition of an input and output device. Following the central control concept inconvenient and not powerful enough for complex 3d modeling.
To specify the properties for the graphical input, doubleclick the graphical input device icon, or rightclick the icon and then choose open from the menu that appears. Input devices as well as output devices are a neccessity in order to. Fahad khan an input device is a piece of hardware that is used to enter data into a computer. Input modes con both request and sample modes are useful for situations where the program guides the user, but are not useful in applications where the user controls the flow of the program.
Output can be text, numeric data, line, polygon, and other objects. Every computer performs the basic functions of input, processing, storage, output. The image below shows where input dev ices fit into a computer system. Input devices are capable of converting data into a form which can be recognized by computer. Input devices input is any data or instructions entered into the memory of a computer. Input devices are necessary to convert our information or data into a form which can be understood by the computer. Contributions in this paper, we introduce the gui robots framework.
Pdf interaction styles and inputoutput devices researchgate. In computer graphics, the use of logical devices is slightly more complex. Input devices let you to transfer data and user command into the computer system. When an object, such as a finger, presses down on a point on the panels outer surface the two metallic layers become. Input technologies and techniques, in handbook of human. The mouse is used to navigate the graphical user interface gui. A computer has two types of devices which help the user to enter data into the computer and allows the computer to display result of the processed data as required by the user. Input and output devices bangladesh open university.
Printers a printer is an output device that converts an electronic document onto printing paper, photo paper, transparent film, etc. Input devices are any electronic devices connected to a computer that produce input signals. Computer graphics chapter 3 input and interaction input devices. Humancomputer interactioncomputers have always been good at calculations and data processing. The jo ystick is a vertical stick which moves the graphic cursor. Computer input and output device pdf in hindi, input and output devices in hindi pdf, what is input in hindi, input and output devices in hindi wikipedia, input and output devices pdf, input aur output device, input and output devices of computer in hindi ppt, input devices, input output system in hindi. The devices are usually used for display, projection, or for physical reproduction.
Plc interview questions and answers plc programming. For example, in the traditional graphical user interface, users can scroll through a document by clicking or dragging the mouse input within a scroll bar. Thus, a computer must have a system to receive information from the outside world and must be able to communicate results to the external world. A microphone is an example of input device for audio input a webcam is an example of an input device for video input. A piece of equipmenthardware which helps us enter data into a computer is called an input device. Mcq input and output device of computer with answers pdf.
A piece of equipmenthardware which gives out the result of the entered input, once it is processed i. Also, here are more than 15 output devices mentioned for you. The input devices include the mouse, keyboard,microphone e. The data can be in the form of text, graphics, sound, and text. Plcs will operate on any systems which will have input field devices that are onoff type discrete or digital or analog input devices. A computer is an electronic device that works under instructions given by the user to accept, process and output information as required. Data data presented to an input device has to be in the right form for the device, e.
1576 913 151 1484 540 444 1627 502 1526 435 1514 236 1380 1203 1247 1138 697 456 1477 1184